Specific code 2009 ICD-9-CM Diagnosis Code 049.9
Unspecified non-arthropod-borne viral diseases of central nervous system
  • Short description: VIRAL ENCEPHALITIS NOS.
  • ICD-9-CM 049.9 will be replaced by an equivalent ICD-10-CM code (or codes) when the United States transitions from ICD-9-CM to ICD-10-CM on October 1, 2015.
  • ICD-9-CM 049.9 is a billable medical code that can be used to specify a diagnosis on a reimbursement claim.
  • You are viewing the 2009 version of ICD-9-CM 049.9.
  • More recent version(s) of ICD-9-CM 049.9: 2010 2011 2012 2013 2014.
Disease Synonyms
  • Nonarthropod-borne viral cns infection
  • Non-arthropod-borne viral disease of the central nervous system
  • Viral cns infection nonarthropod borne
  • Viral encephalitis
Applies To
  • Viral encephalitis NOS
Convert to ICD-10-CM: 049.9 converts approximately to:
  • 2014 ICD-10-CM A86 Unspecified viral encephalitis
    Or:
  • 2014 ICD-10-CM A89 Unspecified viral infection of central nervous system
ICD-9-CM Volume 2 Index entries containing back-references to 049.9:
  • Disease, diseased - see also Syndrome
    • nonarthropod-borne NEC 078.89
      • central nervous system NEC 049.9
      • enterovirus NEC 078.89
    • virus (filterable) NEC 078.89
      • arbovirus NEC 066.9
      • arthropod-borne NEC 066.9
      • central nervous system NEC 049.9
      • complicating pregnancy, childbirth, or puerperium 647.6
      • contact (with) V01.79
      • exposure to V01.79
      • Marburg 078.89
      • maternal
        • with fetal damage affecting management of pregnancy 655.3
      • nonarthropod-borne NEC 078.89
        • central nervous system NEC 049.9
      • vaccination, prophylactic (against) V04.89
  • Encephalitis (bacterial) (chronic) (hemorrhagic) (idiopathic) (nonepidemic) (spurious) (subacute) 323.9
  • Infection, infected, infective (opportunistic) 136.9
    • virus, viral 079.99
      • adenovirus
        • in diseases classified elsewhere - see category 079
        • unspecified nature or site 079.0
      • central nervous system NEC 049.9
      • chest 519.8
      • conjunctivitis 077.99
        • specified type NEC 077.89
      • coronavirus 079.89
      • Coxsackie (see also Infection, Coxsackie) 079.2
      • Ebola 065.8
      • ECHO
        • in diseases classified elsewhere - see category 079
        • unspecified nature or site 079.1
      • encephalitis 049.9
      • enteritis NEC (see also Enteritis, viral) 008.8
      • exanthem NEC 057.9
      • Hantavirus 079.81
      • human papilloma 079.4
      • in diseases classified elsewhere - see category 079
      • intestine (see also Enteritis, viral) 008.8
      • Lung - see Pneumonia, viral
      • respiratory syncytial (RSV) 079.6
      • Retrovirus 079.50
      • rhinovirus
        • in diseases classified elsewhere - see category 079
        • unspecified nature or site 079.3
      • salivary gland disease 078.5
      • slow 046.9
        • specified condition NEC 046.8
      • specified type NEC 079.89
        • in diseases classified elsewhere - see category 079
      • unspecified nature or site 079.99
      • warts 078.10
      • yaba monkey tumor 059.22
  • Myelitis (ascending) (cerebellar) (childhood) (chronic) (descending) (diffuse) (disseminated) (pressure) (progressive) (spinal cord) (subacute) (see also Encephalitis) 323.9
    • virus 049.9
ICD-9-CM codes are used in medical billing and coding to describe diseases, injuries, symptoms and conditions. ICD-9-CM 049.9 is one of thousands of ICD-9-CM codes used in healthcare. Although ICD-9-CM and CPT codes are largely numeric, they differ in that CPT codes describe medical procedures and services. Can't find a code? Start at the root of ICD-9-CM, check the 2009 ICD-9-CM Index or use the search engine at the top of this page to lookup any code.